The reducing rate of radiocesium 137Cs in the North Pacific surface water after the TEPCO fukushima Dai-ichi nuclear power plant accident

被引：0
|
作者：
Keiri Imai
Yutaka W. Watanabe
机构：
[1] Hokkaido University,Faculty of Fisheries Science
[2] Hokkaido University,Faculty of Environmental Earth Science
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2022年 / 331卷
关键词：
Fukushima Dai-ichi nuclear power plant accident; Cs; North Pacific Ocean; Reducing rate;
D O I：
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学科分类号：
摘要：
We started monitoring the radiocesium released from Fukushima in the North Pacific surface water from May 2011 after the accident soon to June 2016, using the cruise of the Oshoro-maru of Hokkaido University. We found that the reducing rate from the ocean surface of 137Cs regardless of the distance from Fukushima was almost constant at 0.0033 ± 0.0005 day−1. This finding indicated that 96% of 137Cs in the surface water over the North Pacific were removed by 1000 days after the accident from the surface water to the ocean interior excluding the decrease by radioactive disintegration.
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页码：3847 / 3855
页数：8
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